Water-soluble heat-press-bonding polyvinyl alcohol type binder fiber, nonwoven fabric containing said fiber, and processes for production of said fiber and said nonwoven fabric

Mixed to be high melting point PVA of the polymer A and low fusing point water-soluble polymer B the system in the solvent in the solution formed; Wherein the low temperature is formed, wherein after manufacturing the fibre, using the cross - section and a form a layer of island, A polymer comprising the metal component, polymer B is island component; A is stretched. The fibre in a solvent 100℃ or low temperature of the water, tensile strength 3g/d or above, wherein at least part of the island component is in the surface μ 2 m. range And the fibre surface of a island component is. The shop the or the wet shop with the fibre can of the non-woven fabric.